HP power adapter 18.5v 3.5a Lenovo model is f31 20v3.25a
Hello, thank you for choosing HP products.
Different brands and models of notebook power adapter specifications (voltage and current, etc.) and the interface size is different, it is unpredictable whether it can be universal. In addition, the brand power adapter is supporting the use of this machine, if used in other brands of computers, it is prone to compatibility issues, it is likely to cause damage to the hardware, it is recommended that you do not mix.
Theoretically, as long as the adapter plug, you can normally connect to the notebook, while the laptop power adapter on the nameplate logo rated output (OUTPUT) the same, or the output voltage is consistent, the current is slightly higher circumstances are also common.
